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UCC3972NG4 Datasheet(PDF) 2 Page - Texas Instruments |
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UCC3972NG4 Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 24 page  2 UCC1972/3 UCC2972/3 UCC3972/3 TSSOP-8 (TOP VIEW) PW Package ABSOLUTE MAXIMUM RATINGS VBAT ......................................... +27V VDD Maximum Forced Current .................... 30mA Maximum Forced Voltage ..........................17V BUCK .................................. –5V to VBAT MODE ................................. –0.3V to 4.0V MODE Maximum Forced Current ..................300 mA Operating Junction Temperature .......... –55°C to +150°C Storage Temperature ................... –65°C to +150°C Unless otherwise indicated, currents are positive into, negative out of the specified terminal. Pulse is defined as less than 10% duty cycle with a maximum duration of 500 ms. Consult Pack- aging Section of Databook for thermal limitations and consider- ations of packages. All voltages are referenced to GND. GND OUT VDD MODE VBAT BUCK COMP FB 1 2 3 4 8 7 6 5 CONNECTION DIAGRAMS ELECTRICAL CHARACTERISTICS:Unless otherwise specified these specifications hold for TA=0°C to +70°C for the UC3972/3, –40°C to +85°C for the UC2972/3, and –55°C to +125°C for the UC1972/3; TA=TJ; VDD=VBAT=VBUCK=12V; MODE=OPEN. For any tests with VBAT>17V, place a 1k resistor from VBAT to VDD. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input supply VDD Supply Current VDD = 12V 1 1.5 mA VBAT = 25V 7 10.5 mA VBAT Supply Current VBAT = 12V 30 60 mA VBAT = 25V 70 140 mA VDD Regulator Turn-on Voltage ISOURCE = 2mA to 10mA 17 18 19 V VDD UVLO Threshold Low to high 3.6 4 4.4 V UVLO Threshold Hysteresis 100 200 300 mV Output Section Pull Down Resistance ISINK = 10mA to 100mA 25 50 W Pull Up Resistance ISOURCE = 10mA to 100mA 25 50 W Output Clamp Voltage VBAT = 25V, Shunt Regulator on 16 18 V Output Low MODE = 0.5V, ISINK = 1mA 0.05 0.2 V Rise Time CL = 1nF, Note 1 200 ns Fall Time CL = 1nF, Note 1 200 ns FB MODE GND COMP VDD OUT BUCK VBAT 1 2 3 4 8 7 6 5 DIL-8 (TOP VIEW) J, N Packages |
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